Tread of an automobile tire



FIG. 1 is a perspective view of a tread of an automobile tire showing my design;

FIG. 2 is a front view thereof;

FIG. 3 is a right side view thereof;

FIG. 4 is a left side view thereof;

FIG. 5 is a rear view thereof:

FIG. 6 is a fragmentary enlarged front view surrounded by line A-A and B-B in FIG. 2; and,

FIG. 7 is a section view taken along line 7-7 in FIG. 6.

The broken lines are used to show portions of the tread of an automobile tire that are not being claimed, and thus form no part of the claimed design. 

CLAIM The ornamental design for a tread of an automobile tire, as shown and described. 